GE Healthcare
Senographe DS Acquisition System
Revision 1
Operator Manual 5307907-3-S-1EN
Image Acquisition Procedure
12-imgac.fm
Page no. 125
Chapter 12
Chapter 12 Image Acquisition Procedure
1
Overview
This chapter explains the procedure for standard examinations using the Senographe DS, from the prepara-
tory tasks to be performed on the equipment (selection of exposure mode, configuration, etc.) through
patient positioning, with notes on the exposure sequence and image processing. In section
you will find a table of suggested parameter settings.
An exam using the Senographe DS acquisition application is performed in exactly the same way as a con-
ventional exam (e.g., using a Senographe DMR) in terms of operation and patient positioning.
The major difference is that you use a Digital Detector instead of a conventional film/screen cassette. The
images are available on the AWS monitor within a few seconds after the exposure.
Immediately after acquisition, the raw image is displayed for a few seconds. It is then replaced by the pro-
cessed image. Images of earlier exams can be recalled from the image disk for review.
2
Preparation
2-1
Worklist
Exposures can only be made after patient/exam selection from the Worklist (see Chapter
If the examination has not been scheduled and included in the Worklist, a new entry can be made, but image
acquisition is not permitted until basic patient information has been recorded in the system and laterality has
been selected. After selection of the patient for whom you want to start acquiring images, click the Start
Exam button to continue with image acquisition. The Viewer window (see Chapter
) opens, and
exposures are permitted once you have selected the breast laterality on the console.
2-2
Preparing the equipment
Configure the system for the required view, contact or magnification. The digital detector incorporates a
removable grid (Bucky). For magnification views the Bucky is removed and replaced by a magnification
stand. See section
Configure the field size to be used.
Install the appropriate compression paddle. Check that the type of paddle is correctly recognized by the sys-
tem and displayed on the Gantry readout. Paddles not designed for use with the system may give incorrect
results.
No specific tube warm-up procedure is needed at power on.
Choose the appropriate exposure mode. This may be AOP mode (Automatic Optimization of Parameters),
described in section
4-1 Definition of AOP on page 127
, or Manual mode, described in section
.
Use of the AOP Mode provides the best quality/dose compromise, according to the priority selected by the
operator, but is not suitable for all examinations.
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